as indicative of the Age of the Animal. 
327 
the engravins: should be reduced one-half, which prevents many 
of the peculiarities being depicted so clearly as otherwise they 
might have been. 
Attention must again be directed to the fiont part of the 
mouth. In fig. 29, we have a representation of the incisors at 
tivo years and four months, in a case of early dentition. The 
crowns of the second pair are as yet encircled by the gum at 
their lower part. In most cases these teeth will crowd upon the 
first pair, and overlap their outer edges. As time steals on, 
however, by further rising from their sockets they will stand more 
easy in the jaw. 
Fig. 29.* 
(JTTING 
The temporary incisors are now much diminished. After 
the animal has completed the second year of his age, they get 
rapidly smaller, chiefly because the thin covering of enamel 
about their neck is unable to withstand the daily attrition they 
undergo. My note-book furnishes so many cases of the second 
pair of incisors being cut at two years and a quarter, especially in 
Short-hom and Flereford bulls, that I have taken this date in the 
preparation of the table of early dentition, as the time of the cutting 
of these teeth. In our Devon cattle there are fewer instances of 
manent, 2, 3, 4 temporary, having the permanent beneath them enclosed in their 
capsules. Molars ; 1, 2, 3 permanent contained within their capsules beneath the 
fangs of the corresponding temporary; 4, 5, permanent molars full developed; 6, 
permanent molar cutting. Reduced one half from natural size. 
* Fig. 29. Front part of the lower jaw at two years and four months, showing 
the second pair of permanent incisors, 2, 2. The temporary incisors are worn to 
their necks. Natural size. 
